Stack Series
The Stack Series delivers flexible, modular solar battery storage designed for residential and light commercial applications. Built for reliability and easy expansion, it provides dependable power for solar integration, backup, and everyday energy. It uses a compact 5.12kWh LiFePO4 module and is simple to install and scale, from a single battery to over 150kWh, without external racking, exposed wiring, or adding unnecessary complexity.
Product Documents
Features & Benefits
Stack Series batteries combine strong power management with durable construction for consistent, long-term performance. Modular stacking allows you to create the right-sized system today with seamless expansion tomorrow. Designed with installer efficiency, Stack Series delivers reliable energy without unnecessary complications. The Stack Series gives you:
- Modular stacking in 5.12kWh increments
- Closed-loop communication with most major inverter brands
- Proven Impactiv cell balancing for extended battery life
- Compact footprint with no exposed racks or cabling
- Designed for residential backup, solar energy self-consumption, and light commercial use
- This is energy storage that scales intelligently—without forcing redesigns or workarounds
- 10-Year Warranty
24V/200AH Key Specs
Model: RS25200
Nominal Voltage: 25.6V
Capacity: 200Ah
Energy Storage: 5.12 kWh
Maximum Continuous Output: 180A
Dimensions: 22.6 × 19.3 × 6.2 in (57.4 × 49.0 × 15.7 cm)
Weight: 108 lbs (49.0 kg)
Cycle Life: 6,000 cycles @ 80% DoD
Certifications: UL 1973 (UL 9540A and UL 9540DC ESS pending)
Warranty: 10 years
48V/100AH Key Specs
Model: RS51100
Nominal Voltage: 51.2V
Capacity: 100Ah
Energy Storage: 5.12kWh
Maximum Continuous Discharge: 90A
Dimensions: 22.6 × 19.3 × 6.2 in (57.4 × 49.0 × 15.7 cm)
Weight: 108 lb per battery
Cycle Life: 6,000 cycles at 80% DoD
Certifications: UL 1973 (UL 9540A and UL 9540DC ESS pending)
Warranty: 10 years
Videos
Watch installation guides, setup walkthroughs, and best-practice videos for the Stack Series. These resources provide clear, step-by-step support to help ensure successful installs and optimal performance.
Installing a 70kWh Rubix Battery Bank + Sol-Ark 15kW Inverter | Full Setup & Walkthrough
Start Small. Go Big.
Begin with a single 5.12kWh module and expand as energy demands increase. Stack Series batteries allow up to 7 batteries per stack and 32 x Parallel (457kWh), delivering scalable capacity without sacrificing system simplicity or aesthetics.
Components
Base & Lid
The base and lid provide a stable, protective foundation for Stack Series battery installations. Designed to integrate seamlessly with the system, they help ensure proper alignment, protection, and a clean finished appearance.
Busbars
Busbars enable safe, efficient electrical connections between stacked batteries. Engineered for reliability and proper current distribution, they simplify system assembly while maintaining consistent performance.
Magnetic Cover
The magnetic cover offers quick, secure access to the top of the Stack Series system. Its tool-free design allows for easy installation and removal while maintaining a clean, finished look.